Pick-head fastener



Sept. 2 1924.

W. D. LEWIS lcx HEAD FASTENER Filed July 2, 1923 Patented Sept. 2, 1924.

UNITED STATES PATENT OFFICE.

WILLIAM D. LEWIS,y PLYMOUTH, PENNSYLVANIA.

:Pick-HEAD FASTENER.

Application lediluly 2, 1923.V Serial No. 649,147. l i

To all whom t may concern:

Be it known that I, WILLIAM D. LEWIS', a citizen of the United' States, residmg` at `Plymouth, in the county of Luzerne and State of Pennsylvania, have invented new and useful Improvements inl vPickLHead Fasteners, of which the following Ais a specification. v v

The present invention relates to tools such as picks of the' character in whichv a-"blade is detachably secured to the handle within'a socket, and an object of the invention isl to` character the difficulty arises that the wedgeso employed often becomes detached andy lost, and an object of thc inventionis to provide means for preventing the d1sconnection of the wedge fromrKwalls of the' socket. r

Other, objects of the invention are sim plicityV and durability of construction and cheapness of manufacture. L i

In the drawings accompanying and' forming a part of specication- Figure 1 is an elevation of a tool, showing the helve or handle in placevwithin its housing and a blade such as a pick secured within a stirrup attached to the housing.

Figure 2 is a section on the line 2-2, Figure 1, showing the construction o f the housing and of the eye within the stirrup, the handle or helve being omitted.

Figure 3 is a section on the line 3-2-3, Figure 2 showing still further the construction of the housing and the stirrup.

Figure 4 is .a plan view of the wedge showing a slide member attached thereto and also indicating the method of closing the slot between the side members of said slide member.`

Figure 5 is a section on line 5-5 of Figure 4 showing the sliding connection between the wedge and the helve housing.

Referring to the drawings in detail- 10 designates-a handle or helve, 11 a pick blade preferably of steel and 12 a helve housing of any suitable material, preferably of metal as cast-iron, formed toreeeive the helve o'r handle snuglytherein, the housing being provide-d with rapertures 13 through which fastening devices may be inserted 'if desired, for preventing thev accidental dis-` placement of the housing from the helve and preferably closed at one end by a Wall 14 against which the innerend of the l,handle abuts when in place. Projecting from either side of the closed end of the housing are walls l15 connected at their outer ends by a wall 16,l preferably thicker than the `walls 15 for purposes of strengt'h,'and formingv a st'irrup having an eye or socket 18 therein. The helve housing `12 and the stirrup are preferablyv formed integral as shown, by

casting or any other suitable method, although they may be formed separately' and then brazed orotherwise secured together. Adjacent the wall 14, the walls 1,5at thel bottom'of the eye are bowed'outwardly to form grooves or slideways 1 will presently appear.

Located within the eye 18` vof the strrup is a wedge 19,' preferably of malleable iron,

having a longitudinal, groove or channel 2OA 7 `for a purpose which i formed therein, which groove or channel is i preferably closed at bothl ends, andl secured to the. wedge on the grooved side is. ak

metallic yslide plate 21 having ad slot 22 formed longitudinally thereofl and corresponding to the .groove within the wedge,

said slot howeverfbeing'of Vless width' than said groove and lying centrally thereof. The base of the groove` or channel 20 vis parallel with and similarly inclined to that face Iof the wedge 19 which lies adjacent to the wall 14 yof the helve housing, and the V plate 21 bears flat against said face of said wedge with the slot -22 thereof extending longitudinally in central relation to the groove or channel 20. The wedge therefore consists of the two parts 19 and 21, but the two parts `act as a whole. Securedy to the end wall 14, preferably by riveting, is a lug 23 projecting through the slot l22 of the plate 21 and having ahead 24 riding in the groove 20` of the Wedge 19. The outer edges 25 of the plate 21 extend beyond the side edges of the wedge 19 and form flanges adapted to have a sliding iit in the slideways 17 described above. Moreover, it will be seen that the lug or headed stud 23 is secured t-o the wall 14 ofthe eye rather close to one end of the eye or socket 18 so as to permit a maximum movement of the wedge 19 and its plate 21 and thns to make it possible to release 'the pick bllad'e il on other tool member by moving theivedge and plate along the length yof that side yof the blade Which lies adjcent' toffthe Wal'lll' so as to' permit the outer Wall 16 of the `eye to be moved out of engagement 'withy the recess 28 formed in the opposite side of the pick blade or `other toolmember Il. The wedgel) is perferably of such length that both ends thereof project beyond theh'ons'- ingQ. This construction adapts it to be readily loosened or tightened by e `knock with a suitable instrument on' the approprie ate end thereof.

From the foregoing, it will appear that the Wedge: While adaptedy to slideffreelyin the slideways, is at the same time iliinitefd in its sliding movement and' prevented from becoming disengaged from the eye of the stirrnp and in order toA hold the Wedgefin adjnsted position when the blade l1 is in place, the upper surface of the platelQl ronghened or for-medl with projections 26' Which' grip the head rof the lug 23'. f Ready assembly rof 4the Wedge and stirrup nis ef!` fected yby constructing the plate 2li with one end of the slotY 22 open and byVl providingtheV blank from which the -plateis formed'with projecting .portions QZyhi'ch'f after the lug has been inserted Within the slot7 may be peened over to close or' partially close the opening.,

The blade 1l is formed with a depressiony 28 adapted to snugly receive the thickened outer iv'all 16 ofl thestirrnp'vvhi'ch c'lonslrne-l tion insures against' accidentalV diseng'agel nient of the platefrom its socket.

' From the above description 1t "will be. seen that I have providedV a simple device adapt! ed yto connect a blade' to a ,handle and to,Z prevent the accidental disengagement of said blade from its socket, land in which disengagenehtmybe readily and simply accomplished the opealto,` by simply knocking on one end of the Wedge. I have alsopr'iv'ided agains'tftleifwedge becoming accidentally' lost or disengaged from the Wlll'lL-bymeans of the sliding connection therebetween,- Y

`Myif"irftion`h`as been shown in connection with a pick, bnt tit Willbe nnderstood that Idonot Wish t``I beflimited'toftliis' specific constriiction, as" the principlestheef of are applicab'l'eto miny jandva'ri'ed' aftlions in which' a. bladder like member is to be attached YWithin a (socket.` y

Havingfdescribd .my 4vinvention what Il ds: Y Y Y A device of the character described coni-` prisin'gf a' helv'e'socket having' an enter closed zend- Land a stirriipprfojecting 'beyond saidA closed"endg a"Wedgslidable'thf 'gf' the stifii' and having a channel eX tenlifd longitn` nally thereof and "firmedvithf closed'ends7 the vdv'edg'e inclinfc'ling plate's? cii'red'fthereto and 'formed'l 'with' a 'Toingilfy tuinalv sitter lessi' widtlijthan the channel? and' also! provided ,ivijtl 4ben'la-ble projecting y portions-*extending inwardly at "opposite sides "'fvthe islota'tj 'one endg and4V a pin se! Arjaoelju; oner 'sd'f edge' iof'the" .latter aj l provided .witlif a head'ofgif' 'ter extent than the slot'of the" late andi Y the emmer of t wenige; ej pv i n s etedbetfeen the bendalcle` piojectii tions-at one endj 'he opposite Side gf the' slot 'i'n'sthe plateY 'and'y said projections' bent inwardly to close the slot and hold'the piii' infconnecti'n withl the' pllateiaiid Wedge, In testimony/'whereof I2 have heruntoset myhand. s 

